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Bilbao

$387+ Cheap flights from Seattle (SEA) to Bilbao (BIO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BIO
abr. 22 — abr. 291
mar. 4/22
mar. 4/29
1 adult, Economy
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Cheap flight deals from Seattle to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Bilbao (BIO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated abril 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$710
(Mytrip)

One-way from

$387
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,068
Provider with most accurate pricing for Seattle/Tacoma Intl-Bilbao flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Bilbao flights.
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From Seattle/Tacoma Intl to Bilbao
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One-way flight from Seattle/Tacoma Intl to Bilbao
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Highest demand for flights based on searches. 16% potential increase in price ($230 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Seattle to Bilbao

Cheapest flights from Seattle to Bilbao
Explore the most affordable flight options available from Seattle to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.

This Mytrip deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/133:45 pmSEA - BIO
2 stops17h 50mMultiple Airlines
mar. 5/206:10 pmBIO - SEA
3 stops39h 00mMultiple Airlines
Deal found 4/17$776
This KLM deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/121:30 pmSEA - BIO
1 stop23h 30mKLM
lun. 9/225:15 pmBIO - SEA
1 stop27h 30mKLM
Deal found 4/17$784
This FlightHub deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/56:50 pmSEA - BIO
1 stop14h 00mLufthansa
lun. 9/297:10 pmBIO - SEA
2 stops28h 06mLufthansa
Deal found 4/17$792
This Air Canada deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/127:20 amSEA - BIO
2 stops26h 05mAir Canada
lun. 9/222:10 pmBIO - SEA
2 stops37h 26mAir Canada
Deal found 4/17$796
This United Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/128:00 amSEA - BIO
2 stops25h 25mUnited Airlines
lun. 9/222:10 pmBIO - SEA
2 stops41h 06mUnited Airlines
Deal found 4/17$801
This Gurufare deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/136:45 pmSEA - BIO
1 stop13h 45mAer Lingus
mar. 5/206:10 pmBIO - SEA
1 stop32h 40mAer Lingus
Deal found 4/17$930
This FlightHub deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/187:10 pmSEA - BIO
1 stop30h 55mTurkish Airlines
sáb. 5/2412:05 pmBIO - SEA
1 stop38h 10mTurkish Airlines
Deal found 4/17$1,063
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/126:40 amSEA - BIO
2 stops25h 55mTAP AIR PORTUGAL
lun. 9/2212:25 pmBIO - SEA
3 stops30h 54mTAP AIR PORTUGAL
Deal found 4/17$2,401

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Bilbao that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated abril 17, 2025.
Use the filters below to find and compare flights from Seattle to Bilbao that are best for you.

Fly from

Seattle

Fly to

Bilbao

Route

Depart

Return

Price

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

mar. 5/13

3:45 pm-6:35 pm

2 stops17h 50m

Bilbao

mar. 5/20

6:10 pm-12:10 am

3 stops39h 00m

$776

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

vie. 9/12

1:30 pm-10:00 pm

1 stop23h 30m

Bilbao

lun. 9/22

5:15 pm-11:45 am

1 stop27h 30m

$784

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

vie. 9/5

6:50 pm-5:50 pm

1 stop14h 00m

Bilbao

lun. 9/29

7:10 pm-2:16 pm

2 stops28h 06m

$792

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

vie. 9/12

7:20 am-6:25 pm

2 stops26h 05m

Bilbao

lun. 9/22

2:10 pm-6:36 pm

2 stops37h 26m

$796

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

vie. 9/12

8:00 am-6:25 pm

2 stops25h 25m

Bilbao

lun. 9/22

2:10 pm-10:16 pm

2 stops41h 06m

$801

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

mar. 5/13

6:45 pm-5:30 pm

1 stop13h 45m

Bilbao

mar. 5/20

6:10 pm-5:50 pm

1 stop32h 40m

$930

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

dom. 5/18

7:10 pm-11:05 am

1 stop30h 55m

Bilbao

sáb. 5/24

12:05 pm-5:15 pm

1 stop38h 10m

$1,063

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

vie. 9/12

6:40 am-5:35 pm

2 stops25h 55m

Bilbao

lun. 9/22

12:25 pm-10:19 am

3 stops30h 54m

$2,401

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

sáb. 5/17

4:20 pm-8:45 am

2 stops55h 25m

$387

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

lun. 5/19

6:35 pm-10:00 pm

1 stop18h 25m

$706

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Compare providers for flights from Seattle to Bilbao

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Bilbao in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Bilbao flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Bilbao flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Seattle-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Bilbao flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Bilbao flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Bilbao

What is the cheapest month to book a flight from Seattle to Bilbao?

Currently, January is the cheapest month in which you can book a flight from Seattle to Bilbao (average of $541). Flying from Seattle to Bilbao in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to BIO?

Find hourly flight availability from Seattle to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 17, 2025.

It’s optimal to fly from Seattle to Bilbao in the morning. By choosing this option you can save up to 43% on the cost of your flight, compared to a flight at noon.

Rainfall in Bilbao by month

Plan your trip to Bilbao by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bilbao ranges from 2.4 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Bilbao when rainfall is around 2.4 in.

Temperature in Bilbao by month

Plan your trip to Bilbao by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bilbao, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Bilbao

Get insights into the airlines that provide service to Bilbao. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bilbao. Reviews last updated abril 17, 2025.
Air France
7.5
Good
1,435 reviews

Crew

8.2

Entertainment

7.0

Overall

7.5

Comfort

7.4

Food

7.0

Boarding

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.
Air France
7.5
Good
1,435 reviews
Air France
7.5
Good
1,435 reviews

Crew

8.2

Entertainment

7.0

Overall

7.5

Comfort

7.4

Food

7.0

Boarding

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.
United Airlines
7.4
Good
8,667 reviews
Air France
7.5
Good
1,435 reviews

Crew

8.2

Entertainment

7.0

Overall

7.5

Comfort

7.4

Food

7.0

Boarding

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.
Turkish Airlines
7.3
Good
3,769 reviews
Air France
7.5
Good
1,435 reviews

Crew

8.2

Entertainment

7.0

Overall

7.5

Comfort

7.4

Food

7.0

Boarding

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.
TAP AIR PORTUGAL
7.1
Good
1,837 reviews
Air France
7.5
Good
1,435 reviews

Crew

8.2

Entertainment

7.0

Overall

7.5

Comfort

7.4

Food

7.0

Boarding

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.
Air Canada
7.0
Good
9,142 reviews
Air France
7.5
Good
1,435 reviews

Crew

8.2

Entertainment

7.0

Overall

7.5

Comfort

7.4

Food

7.0

Boarding

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Seattle to Bilbao round-trip?

    Cheapflights users have booked flights from Seattle to Bilbao round-trip from $930. Other airlines that can offer you cheap pricing are Lufthansa, from $989, and Turkish Airlines, from $1,063. Aer Lingus is 17% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Seattle to Bilbao that include hotel bookings?

    Yes. In addition to deals on Seattle to Bilbao flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Bilbao?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Bilbao.

  • Can I find deals for business class flights from Seattle to Bilbao?

    Yes. Cheapflights offers flight deals from Seattle to Bilbao by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Bilbao (average of $541). Flying from Seattle to Bilbao in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Seattle to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
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Seattle to San Sebastian flights
Pasco to Bilbao flights

Top 5 airlines flying from Seattle to Bilbao

Discover the top 5 airlines that operate flights from Seattle to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated abril 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$672Average$1,232FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$675Average$928FlexibilityNo cancel feeOn-time77%
DeltaCheapest$757Average$1,182FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$765Average$1,068FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$786Average$1,553FlexibilityNo cancel feeOn-time69%

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